Method of decorating stone.



PATENTED 1\l[AR...-17,1903.v

UNITED STAT S PATENT @rrrcs.

ERNST EBERI-IARD HIPPE, OF COPENHAGEN, DENMARK.

METHOD OF DECORATING STONE.

SPECIFICATION formingpart of Letters Patent No. 722,708, dated March 17, 1903. Application filed August 8, 1901. Serial No. 71,405. (N0 specimens.)

T0 (LZZ whom it may concern.-

Be it known that LERNsT EBERHARD HIPPE, sculptor, a citizen of Germany, residing at No. 68 Norrebrogade, Copenhagen, in the Kingdom of Denmark, have invented certain new and useful Improvements in Methods of Decorating Stone; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention refers to the color ornamentation of marble, cement, and similar porous material or artificial stones, and has for its object to prevent the spreading of the colors within the body of the marble outside the boundary of such colors on the surface. The difficulty of producing differentlycolored distinct designs upon such stones is due to their porosity, which permits the color to not only penetrate the stone to a certain depth, but also spread analogous to ink on blotting-paper. When two or more colors are applied alongside one another, they will mix Within the body of the stone at the planes limiting their contour without a well-defined contour being formed and-produce a more or less indefinite transition-belt between the differently-colored portions. 7

Referring to the drawings, in which like parts are similarly designated, Figure 1 is a perspective view, partly in section, of a circular design. Fig. 2 is a similar view illustrating the simultaneous application of mutually-repellent colors. Fig. 3 is a plan view; and Fig. 4 a perspective view, partly in section, showing the combination of the methods used in Figs. 1 and 2.

I first draw the contour-lined of the design with a pencil on the stone 7 and then on each side of this line draw or paint in the lines I) b with a fluid capable of closing the pores in the stone, preferably, though not necessarily, using an alkaline silicate. The first effect of this is to close the pores of the stone at the sides of the line a, while in the center, between the lines I), it willremain moist, to which from time to time, or as the exigencies of each particular case demand, a fresh quantity of the fluid may be added until the surface loses its property of absorption. The result will be a contour-line wedge-shaped in section, as

shown at c. The width and depth of the wedge-shaped contour-line can therefore be suitably regulated. The design 1, here shown as a circle, is now surrounded by a pore-filled wall that extends into the body of the stone. The color is then applied either within or without the contour-line, and a well-defined field is obtained that extends into the body of the stone.

Referring more particularly to Fig. 2, let it be supposed that a blue field 1 is to be made in the center of the marble or other piece of stone. I first draw the outline a in pencil and at once apply the color, that is ground or mixed in alcohol, water, or a fluid that mixes with water. I now use two brushes h i or the like and paint around the contour-line a, the one i containing the color, and the other, 71., containing a fluid that is repellent to the fluid in the other brush t'such as oil, petroleum, ether, melted wax, or other oleaginous fluid that does not mix with water. If the solutions have the same power of moistening, they will be absorbed by the stone with the same rapidity on each side of the contourline c, and as they do not mix they will not spread into one another, but form a perpendicular boundary a into the body of the stone. The inner parts of the design are then colored. It is of course obvious that two colors can be applied, provided they or their solvents are mutually repellent-such as one color mixed or dissolved in water, ammonia-water, glycerin, or alcohol and the other color in turpentine, oil, petroleum, ether, and the like. In many cases I prefer to use a colored alkaline silicate to draw in the contour-for example, colored with indigo-and if this contour has the same color as one of the fields then there will be no perceptible difierence between them.

Figs. 3 and 4 show a slab 7 on which both of the described methods of procedure are employed. A retangular belt 2 to be colored red is surrounded, as above described, with an alkaline-silicate belt I) c, and the red color is then applied anilin dissolved in melted wax,paraffin,or resin. The fields 3 and 5 are simultaneously colored by mutually-repellent fluids, the former colored yellow by an alcoholic solution of chlorid of iron and the latter with a solution of anilin-black in petroleum,.or, if desired, an alcoholic solution of silver nitrate. The field 4 is colored red with alcanna mixed with oil. I also use both methods on the same contour by first making a contour-belt and then applying at each side of it colors mixed or dissolved in mutuallyrepellent fluids.

The color may be dissolved in melted wax or resin and applied to the surface and may be made to be absorbed when thick solutions are used by heating the under surface of the stone. Ordinary templets may be used to separate one color from another or limit the field of color, or the color mixed with its solvent may be absorbed in any suitable absorbent material and pressed out with stamps, which when wax is used as a carrier must be heated.

I do not limit myself to any special way of proceeding, the essential feature being the impregnation of the stone with one or more colored non-miscible fluids that are mutually repellent, that do not diffuse or mix, and to keep them distinct along the contour-lines by reason of their mutually-repellent properties, with or without the use of an alkaline silicate or other material to form a separating-belt at the contour. The result is not merely a sharply-defined design upon the surface, but one that is also sharply defined within the body of the stone, whereby the latter may be dressed or polished subsequently to the coloring process and the sharpness of the design still be maintained.

Having thus described my said invention, what I claim as new therein, and desire to secure by Letters Patent, is

l. The method of decorating stone, which consists in applying a color to one field and treating an adjacent field with a fluid not miscible therewith, substantially as described.

2. The method of decorating stone, which consists in simultaneously applying non-miscible colors to adjacent fields, substantially as described.

3. The method of decorating stone, which consists in first forming between adjacent fields a contour-line of material that is capable of filling the pores of the stone, then applying color to the adjacent fields, substantially as described.

4. The method of decorating stone, which consists in first forming between adjacent fields a contour-line of material capable of filling the pores of the stone and then applying non-miscible colors to the adjacent fields, substantially as described.

5. The method of decorating stone, which consists in first forming between adjacent fields a colored contour-line of material that is capable of filling the pores of the stone and then applying non-miscible colors to the adjacent fields, substantially as described.

6. The method of decorating stone, which consists in first forming between adjacent fields a colored contour-line, of a material capable of filling the pores of the stone and then applying colors to said fields, substantially as described.

7. The method of decorating stone, which consists in first forming a contour-line of an alkaline silicate between adjacent fields and applying liquid colors that are absorbed with the same rapidity to said fields, substantially as described.

8. The method of decorating stone, which consists in first forming a contour-line of an alkaline silicate between adjacent fields and then applying a color to one of the fields that is mixed in an oleagi nous substance and to the other a color mixed with a substance non-miscible therewith, substantially as described.

In testimony thatl claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

ERNST EBERHARD HIPPE.

Witnesses:

J. C. JAOOBSEN, ERNEST BOUTARD. 

